In your own words, fully describe the primary differences in stellar evolution of a high-mass star and a star like the Sun. Be sure to fully describe the steps in complete thoughts. Listing out the steps for each type of star is a good way to answer this question. Be sure you are not doing a copy/paste from the lecture material. I want to know if you can describe the stages. Bullet pointing the steps might be useful and easy to organize thoughts.

Answer:

Vf = 60 [m/s]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f}= v_{i}+(a*t)\)

where:

Vf = final velocity [m/s]

Vi = initial velocity = 0

a = acceleration = 1 [m/s^2]

t = time = 60 [m]

Now replacing:

Vf = 0 + (1*60)

Vf = 60 [m/s]

Answer:

Explanation:

If angle of incidence and angle of refraction be i   and r respectively ,

sini / sinr = μ ( refractive index )

sin r = sin i / μ

If angle of incidence i be constant and medium becomes denser that means μ becomes higher in value , the value of sin r will be low ( because of increase in value of denominator )

As sin r decreases , r also decreases also.

Hence when medium becomes denser , angle of refraction becomes less .

The conservation of momentum and impulse are  the physics principle of the measure the force of the heart's contraction    

The momentum is defined as the product of the mass of the body by its speed. If we make the system isolated, the moment or quantity of movement must be conserved since there are external forces.

                P = mv

               Δp = p_f - p₀

Where p is the momentum, m and v the mass and velocity of the body

In this case we consider the body as an isolated system and if it is immobile, zero velocity, the initial momentum is zero

               p₀ = 0

When the heart pumps the room it goes out in one direction and the body recoils in the opposite direction, so the final momentum is

              p_f = m v₁ - (M-m) v₂

Where m is the amount of blood pumped, (M-m) the remaining mass of the body, v₁ and v₂ the velocity of the blood and the body

If the body is isolated, the momentum will be preserved

               p_f = p₀

               m v₁ - (M-m) v₂ = 0

               v₁ = \(\frac{M-m}{m} \ v_2\)

The To measure the force of the contraction of the heart we use that the impulse is equal to the variation of the momentum

                 I_ {avg} = F t = ΔP

                  F = \(\frac{\Delta p}{t}\)

Where t is the time and is measured with a stopwatch with the pulsations of each patient.

                  F = \(\frac{m \ v_1 - (M-m) \ v_2 }{t}\)

The construction of a system for the measurement must consist of spring or some means of oscillation and use the movement to measure the recoil speed of the patient which is small.

In conclusion, we use the conservation of momentum and impulse are the  physics principle of the measure the force of the heart's contraction    .

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Answer:

conversion or a neutron to a proton and electron. the electronic is emitted

which determines whether an atom will receive, lose, and share electrons with other atoms in order to become stable.

The outside of the nucleus is surrounded by electrons, which are negatively charged particles. Scientists may have trouble observing them since they rotate so quickly. The tiniest particles in an atom, with 2000 of them fitting into a proton, they are drawn to the protons' positive charge.

Why do electrons matter so much?

In addition to participating in gravitational, electromagnetic, and weak interactions, electrons are crucial for a variety of physical processes, including electricity, magnetism, chemistry, and thermal conductivity.

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Since the particle always moves in a circular motion in a direction perpendicular to the radial direction.

The work done by the centripetal force in a circular motion is therefore always zero since the dot product is always zero. A force known as the centripetal force acts on a particle when it is revolving around a specific axis or point. The circular path's center is where this force is directed. The ideal decision is (d) Therefore, the body's weight will be equal to the centripetal force when the angular acceleration reaches the same level as the acceleration caused by gravity. It should be noted that for the centripetal force to equal the weight, there must be a uniform circular motion.

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Answer:

2) Milligrams

Explanation:

This question involves the concepts of centripetal force and angular velocity.

The angular velocity of the Ferris wheel is found to be "1.15 rad/s".

The centripetal force in terms of angular velocity is given by the following formula:

\(F=mr\omega^2\)

where,

F = centripetal force = 1500 N

m = mass of person = 75 kg

r = radius = 15 m

ω = angular velocity = ?

Therefore,

\(1500\ N=(75\ kg)(15\ m)\omega^2\\\\\omega=\sqrt{\frac{1500\ N}{(75\ kg)(15\ m)}}\)

ω = 1.15 rad/s

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The attached picture shows the centripetal force.

Explanation:

If the particles of different densities were dropped at the same time from a boat into still water, they would sink or float based on their individual densities. If the denser particles are heavier, they will sink faster than the less dense particles. The less dense particles will float to the surface.

A 49 kg girl rides on a 4.2 kg skateboard. The girl on the skateboard moves at 1.0 m/s. If the girl jumps off the skateboard backwards with a velocity of 1.6 m/s, the skateboard rolls away at 31.3 m/s.

Law of conservation of linear momentum states that the total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is  

P=mv.  

If we have a system of bodies, then the total momentum is the sum of the individual momentums:

P = m₁v₁ +m₂v₂

If a collision occurs and the velocities change to v', the final momentum is:

P' = m₁v₁' +m₂v₂'

Since the total momentum is conserved, then:

P = P'

m₁v₁ +m₂v₂ =m₁v₁'  +m₂v₂'

A girl of m1 = 49 kg rides an m2 = 4.2 kg skateboard and the common speed is v1 = v2= 1 m/s.

The girl jumps off the skateboard backward with a speed of v1'=-1.6 m/s (negative because it's opposite to the original direction). It's required to find the final speed of the skateboard. It will be calculated by solving for v2':

v₂'= m₁v₁ +m₂v₂ - m₁v₁' / m₂

    = (49 × 1) + ( 4.2 × 1 ) - ( 49× (- 1.6) / 4.2

Calculating the values,

    = 31.3 m/s.

The skateboard rolls away at 31.3 m/s.

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Answer:

LOL! couldnt be me either bestieeeee

Answer:

-_-

Explanation:

i dont know What was XD??

Answer:

the discharge of built-up static electricity

Explanation:

Answer:

I hope this helps.

Explanation:

Answer:

1)The connection should be tight.

2)The wire should be connected at the terminals not in between.

3)clean the ends of the wire by sandpaper.

4)Take the voltmeter and ammeter in proper range.

5)The rheostat should be used of low resistant(about 100).

Liquid containers are necessary to store liquids or other fluids, and are manufactured using various materials. These materials have unique properties and physical characteristics to meet the diverse requirements of different fluids and their storage conditions. Two of the materials used to make liquid containers are covalently bonded and metal.

1) Covalently bonded materials:Covalent bonds are strong bonds formed between atoms by sharing electrons. Covalently bonded materials are non-metallic materials that use a covalent bond between atoms to form the material. Examples of covalently bonded materials that can be used to manufacture liquid containers include:

- Polyethylene Terephthalate (PET): PET is a plastic material used to make water bottles and soft drink bottles. PET is lightweight and unbreakable, making it ideal for shipping and storing liquids.

- Polypropylene (PP): PP is a popular plastic material that is lightweight, durable, and resistant to chemical reactions. PP is used to make containers that store harsh chemicals and strong acids, as well as food containers, such as yogurt cups and margarine tubs.

In conclusion, there are many materials available that can be used to manufacture liquid containers, including covalently bonded materials and metals. The choice of material used depends on the type of liquid being stored and the storage conditions.

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Answer:

Answer is the formation of multiple images of the same object .

Explanation:

I hope it's helpful!

Answer:

Explanation:

See attached file for answer.

Answer:

−1.0 and +0.5

Explanation:

The work is given by:

Plugging the values given we have:

Therefore the man do 120 ft*lb of work

Answer:

\(\huge\boxed{\sf K.E. = 16 \ J}\)

Explanation:

Mass = m = 3 kg

Speed = v = 4 m/s

Kinetic Energy = K.E = ?

\(\displaystyle K.E. =\frac{1}{2} mv^2\)

\(\displaystyle K.E. =\frac{1}{2} (3)(4)^2\\\\K.E. =\frac{1}{2} (3)(16)\\\\K.E. = (2)(8)\\\\K.E. = 16 \ J\\\\\rule[225]{225}{2}\)

The rate at which the current in the solenoid is changing at this instant is 4.4 A/s.

To determine the rate at which the current in the solenoid is changing, we can use Faraday's law of electromagnetic induction. According to Faraday's law, the induced electromotive force (emf) is equal to the negative rate of change of magnetic flux through a circuit. In this case, the solenoid acts as a circuit.

The induced electromotive force (emf) is given by:

emf = -dΦ/dt

Where:

emf is the induced electromotive force,

dΦ/dt is the rate of change of magnetic flux.

For a long solenoid, the magnetic flux (Φ) can be calculated as:

Φ = B * A

Where:

B is the magnetic field strength,

A is the area of the solenoid.

The magnetic field strength inside a solenoid is given by:

B = μ₀ * n * I

Where:

μ₀ is the permeability of free space (4π × 10^-7 T·m/A),

n is the number of turns per unit length (turns/m),

I is the current flowing through the solenoid.

Let's calculate the magnetic field strength (B) inside the solenoid:

B = μ₀ × n × I

 = (4π × 10^-7 T·m/A) × (800 turns/m) × I

 = (3.1831 × 10^-4) × I T

The area (A) of the solenoid can be calculated using the formula for the area of a circle:

A = π × r^2

Where:

r is the radius of the solenoid.

Let's calculate the area (A) of the solenoid:

A = π × r^2

 = π × (0.03 m)^2

 = 0.002827 m^2

Now, substitute the values of B and A into the formula for magnetic flux:

Φ = B × A

  = (3.1831 × 10^-4) × I T × 0.002827 m^2

  = 9.0 × 10^-7 × I Wb

Next, we differentiate the magnetic flux (Φ) with respect to time (t) to find the rate of change of magnetic flux:

dΦ/dt = d/dt (9.0 × 10^-7 × I)

       = 9.0 × 10^-7 × dI/dt Wb/s

Finally, we can equate the rate of change of magnetic flux (dΦ/dt) to the induced electromotive force (emf) given in the problem statement:

emf = -dΦ/dt

    = -9.0 × 10^-7 × dI/dt Wb/s

Given that the induced electromotive force (emf) is 4.0 μV/m = 4.0 × 10^-6 V/m, we can solve for the rate of change of current (dI/dt):

4.0 × 10^-6 V/m = -9.0 × 10^-7 × dI/dt

\(\frac{dI}{dt} = \frac{-(4.0) (10^-6 V/m)}{(9.0) (10^-7)} = -4.4 A/s\)

Therefore, the rate at which the current in the solenoid is changing at this instant is 4.4 A/s.

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Answer:

It is recommended that you exercise within 55 to 85 percent of your maximum heart rate for at least 20 to 30 minutes to get the best results from aerobic exercise. The MHR (roughly calculated as 220 minus your age) is the upper limit of what your cardiovascular system can handle during physical activity.

(I think) ¯\_(ツ)_/¯

Answer:

44.13015

Explanation:

use the 9.8067 newtons to 1 kg conversion

The force exerted on the bucket by the rope is  44.1 N.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. The Newton is the SI unit of force.

Given parameters:

weighs  of the bucket: M = 4.50 kg.

We know that acceleration due to gravity: g = 9.8 m/s².

Hence, gravitational force acting on the bucket in downwards = Mg

= 4.50 kg × 9.8 m/s²

= 44.1 N.

Hence, pulling up a bucket at a constant speed, the person have to exert 44.1 N force on the bucket by the rope  so that it can nullify gravitational force acting on the bucket in downwards.

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The gas mileage of the car in rods per = 1412336rogs/

We have been given:

quantity= 51.5miles per

1 mile = 320.0 rods

1 = 85.7

51.5miles/ = 51.5×1mile/1 ×320.0 rods/1mile×85.7/

= (51.5×320.0×85.7)rods/

= 1412336 rods/

hence, the final answer will be 1412336rods/.

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Answer:

They are linearly proportional, i.e. the higher the ball is, the more potential energy it has.

Explanation:

The formula for gravitational potential energy is PE=mgh where m is mass of the object, h is height above the ground and g is the constant of gravitational acceleration (9.81 m=s²). So, if we increase the heigth, the potential energy also increases.

"The work done in accelerating an object along a frictionless horizontal surface is equal to the change in the object's kinetic energy."

The amount of internal and mechanical energy that objects possess fluctuates as a result of work. When work is done on a system or an object, energy is contributed to it. When a system or item accomplishes work, some of its energy is transferred to something else.

Work involves the transfer of energy from the agent to the object, which modifies the object's motion.

The energy of motion is known as kinetic energy, and it can be observed in the motion of objects or subatomic particles. Kinetic energy can be found in all particles and moving objects. Examples of kinetic energy in action include a person walking, a baseball soaring through the air, a piece of food falling from a table, and a charged particle in an electric field.

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If F = 37 N, the static frictional force between the block and the table and the minimum force required to move it must be equal.

It is the force that regulates itself. The value of static friction varies from zero to the smallest force required to initiate motion. The formula for determining static friction is as follows: Normal Force divided by the static friction coefficient is static friction.

Although the maximum static friction will rise, the frictional force will always be the same as the weight in mg because friction cannot accelerate an object. Because FrN can take any value less than N to balance the weight, this is the case.

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Newton summarize the achievements of the scientific revolution by his laws of motion and universal gravitation provided a unified framework that could explain a wide range of phenomena.

Isaac Newton, one of the key figures of the Scientific Revolution, summarized its achievements through his work "Mathematical Principles of Natural Philosophy," commonly known as "Principia." Newton laid out the fundamental principles of physics and presented his laws of motion and universal gravitation.

Newton's achievements of the Scientific Revolution can be seen in the following key ideas:

1. Universal Laws: Newton proposed the concept of universal laws that govern the motion of objects. His three laws of motion provided a framework for understanding the behaviour of objects in motion, including the relationship between forces, mass, and acceleration.

2. Law of Universal Gravitation: Newton's law of universal gravitation described the force of attraction between two objects due to their masses and the distance between them. This law provided a comprehensive explanation for the motion of celestial bodies, including the planets in the solar system.

3. Experimental Method: Newton's work emphasized the importance of experimental observation and data collection in validating scientific theories. He conducted experiments and used empirical evidence to support his laws and principles.

4. Reductionism: Newton's approach involved breaking down complex phenomena into simpler components and analysing them individually. This reductionist approach allowed for a deeper understanding of natural phenomena by studying their fundamental building blocks.

Newton's work not only summarized the achievements of the Scientific Revolution but also laid the foundation for modern physics and became a paradigm for scientific inquiry.

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Answer:

If a net force acting on a moving object causes its speed to decrease, what

happens to the object's momentum?

-It decreases.

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